Question 1

Yeast fermentation in breads is aerobic.

Accepted Answer

A) True 
 B)False

Question 2

Picking a nice sirloin roast,you ask the meat manager to grind it up into ground beef,to be used for hamburger meat.Since your husband likes his hamburgers rare,you undercooked the meat just as he likes it.Unfortunately,within 2 days he develops the signs and symptoms of gastrointestinal disease--diarrhea,bloating,and vomiting.Which of the following statements best describes what might have happened?

Accepted Answer

A)  The meat grinder was not cleaned well with disinfectant.When the sirloin was ground up with the grinder,bacteria were transferred to the meat and thoroughly distributed throughout the meat.
B)  The sirloin was already contaminated when it was in the whole animal,probably due to the animal being sick.
C)  The hamburger meat became contaminated by bacteria that were in other foods in your refrigerator.
D)  The meat became contaminated by bacteria on the barbeque grill,coating both sides of the hamburger patties.E) C) and D)
F) A) and B)

Question 3

Which enzyme is used in medicine as a blood thinner?

Accepted Answer

A)  streptokinase
B)  protease
C)  catalase
D)  rennet
E)  cellulaseF) A) and B)
G) A) and C)

Question 4

What is made by adding Streptococcus thermophilus and Lactobacillus bulgaricus to milk?

Accepted Answer

A)  kefir
B)  cheese
C)  sour cream
D)  tofu
E)  yogurtF) A) and B)
G) A) and C)

Question 5

The products of yeast fermentation in breads are

Accepted Answer

A)  ethanol and water.
B)  ethanol and carbon dioxide.
C)  carbon dioxide and water.
D)  lactic acid and water.
E)  lactic acid and carbon dioxide.F) B) and C)
G) B) and D)

Question 6

A device in which mass cultures are grown,reactions take place,and product develops is a/n

Accepted Answer

A)  sparger.
B)  activator.
C)  fermentor.
D)  vat.
E)  incubator.F) B) and D)
G) B) and E)

Question 7

Most cases of food poisoning occur in the home,not restaurants.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following statements is true?

Accepted Answer

A)  Microorganisms can be a food source.
B)  Microbial metabolism can alter a food to improve its flavor.
C)  Not all microorganisms in food cause foodborne disease.
D)  All statements are true.E) A) and C)
F) B) and C)

Question 9

Which of the following is not true of coliforms?

Accepted Answer

A)  gram-negative,lactose-fermenting,and gas-producing
B)  include
C)  Coliform counts are not specific for a particular species of bacteria.
D)  All coliforms come from feces,so finding any of them in water indicates fecal contamination.
E)  coli,Enterobacter,and CitrobacterF) C) and E)
G) D) and E)

Question 10

Bread production involves a(n) ____________ fermentation.

Accepted Answer

A)  lactic acid
B)  alcohol
C)  mixed acid
D)  aldehydeE) A) and D)
F) A) and C)

Question 11

In the secondary phase of water treatment,organic matter undergoes biodegradation by a diverse mix of bacteria,algae,and protozoa.

Accepted Answer

A) True 
 B)False

Question 12

Sewage treatment processes result in the production of _________,which can then be used to make electricity.

Accepted Answer

A)  carbohydrates
B)  hydrogen gas
C)  methane
D)  nitratesE) None of the above
F) B) and C)

Question 13

The final treatment of sewage before release into the environment is

Accepted Answer

A)  sludge digesting.
B)  skimming.
C)  filtration.
D)  chlorination.
E)  aeration.F) A) and D)
G) D) and E)

Exam 25: Applied Microbiology and Food and Water Safety

Most cases of food poisoning occur in the home,not restaurants.

Correct Answer
verified

What is made by adding Streptococcus thermophilus and Lactobacillus bulgaricus to milk?

Correct Answer
verified

Which enzyme is used in medicine as a blood thinner?

Correct Answer
verified

The final treatment of sewage before release into the environment is

Correct Answer
verified

Yeast fermentation in breads is aerobic.

Correct Answer
verified

The products of yeast fermentation in breads are

Correct Answer
verified

Correct Answer
verified

In the secondary phase of water treatment,organic matter undergoes biodegradation by a diverse mix of bacteria,algae,and protozoa.

Correct Answer
verified

Sewage treatment processes result in the production of _________,which can then be used to make electricity.

Correct Answer
verified

Bread production involves a(n) ____________ fermentation.

Correct Answer
verified

Which of the following statements is true?

Correct Answer
verified

Which of the following is not true of coliforms?

Correct Answer
verified

A device in which mass cultures are grown,reactions take place,and product develops is a/n

Correct Answer
verified

Exam 25: Applied Microbiology and Food and Water Safety

Most cases of food poisoning occur in the home,not restaurants.

Correct AnswerverifiedShow Answer

What is made by adding Streptococcus thermophilus and Lactobacillus bulgaricus to milk?

Correct AnswerverifiedShow Answer

Which enzyme is used in medicine as a blood thinner?

Correct AnswerverifiedShow Answer

The final treatment of sewage before release into the environment is

Correct AnswerverifiedShow Answer

Yeast fermentation in breads is aerobic.

Correct AnswerverifiedShow Answer

The products of yeast fermentation in breads are

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In the secondary phase of water treatment,organic matter undergoes biodegradation by a diverse mix of bacteria,algae,and protozoa.

Correct AnswerverifiedShow Answer

Sewage treatment processes result in the production of _________,which can then be used to make electricity.

Correct AnswerverifiedShow Answer

Bread production involves a(n) ____________ fermentation.

Correct AnswerverifiedShow Answer

Which of the following statements is true?

Correct AnswerverifiedShow Answer

Which of the following is not true of coliforms?

Correct AnswerverifiedShow Answer

A device in which mass cultures are grown,reactions take place,and product develops is a/n

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified